When it comes to audio gears, the industry is like a Pandora box that’s full of various brands and models that make it quite overwhelming for a customer to choose the best product in the shop. Sennheiser is a brand whose fame with music lovers are undeniable, with their wide array of products that caters to almost every specific music need. Sennheiser offers headphones, recording instruments, high quality microphones and other music equipment required to produce high-quality audio manipulation. In this article, we will be highlighting one of Sennheiser’s products, the Sennheiser HD 660 S.

Sennheiser HD 660 S Packaging

When it comes to packaging, Sennheiser is known to be glamorous when it comes to packaging, and the Sennheiser 660 S is not an exception. At first glance, the product package looks like a complicated yet well thought package. The main headphone box is made of sturdy cardboard material and there’s a hard carrying case or storage case inside. 

Inside the Sennheiser HD 660 S, you can find an abundant amount of sponge made to protect the product during shipping or storage. Unboxing the Sennheiser HD 660 S is quite a nice experience and you would really feel that you are dealing with a high end product aimed to deliver pure pleasure.

Along with the Sennheiser HD 660 S unit, you get two cables – one cable ends with a 4.4 mm balanced jack while the other cable ends in a 6.3mm single ended jack. There’s also a 6.3mm to 3.5mm adapter so users can use the Sennheiser HD 660 S with players and common sources. Of course, this is extremely helpful especially since 6.3mm and 4.4mm jack are hard to find in the market as of today, whether online or in retail shops.

The headphone package of the Sennheiser HD 660 S does not have spare pads but don’t take this as a bad sign, because the headphones themselves will surely give your ear an awesome and harmonic sound performance.

Sennheiser HD 660 S Quality, Design, Fit and Comfort

The Sennheiser HD 660 S looks sturdy and tough at first glance, but you’ll be surprised that it actually weighs lighter than it looks. The Sennheiser HD 660 S is made mostly of plastic but don’t take this as a sign of being low quality. The plastic materials of the Sennheiser HD 660 S actually deserve a hand for the great reviews of this model because it makes the item resistant to extreme amounts of pressure and weight. Of course, the drivers and the grills on the drivers are made of stainless steel.

The design and aesthetics of the Sennheiser HD 660 S is pretty much the same with its predecessors, bearing a sleek and sophisticated design. As a successor of the HD600 and HD650, it’s not surprising that the Sennheiser HD 660 S bore the legacy trademark design.

The Sennheiser HD 660 S has a large pad and the position of the driver is located at the center. The driver performs its abilities while it is covered with large, metallic grills. Even though the drivers have to deal with multiple layers of protection, none of them actually seals the driver, upholding the open headphone design of the Sennheiser HD 660 S.

Fit and Comfort. If fresh out of the box, the Sennheiser HD 660 S may be a bit tight on the head. Several YouTube videos that feature unboxing of this item share the same first impression when worn for the first time. To be more specific, the design of the ear coupling of the Sennheiser HD 660 S is over-ear circum aural. Don’t think that the fit is not relaxing, though, as it only means that the Sennheiser HD 660 has a secure fit, making it more snug and secure than a helmet of a firefighter.

As per experience, the tight fit eventually eases up over time and becomes more comfortable. The width of the ear pad is also large enough for most ears and the material is also soft and comfy to touch. The Sennheiser HD 660 S may not be the gateway to the most comfortable listening experience on the market, but it performed well during our comfortability test, so it gets a thumbs up from us.

Sennheiser HD 660 Sound Quality

When it comes to sales, the quality of a product is one of the major factors in making the business an empire. In this case, the sound quality of the Sennheiser HD 660 S is definitely up the hill, with an impressive overall sound quality and frequency response. The bass of the Sennheiser HD 660 S is clean, clear, snappy and easy to control. This model is great if you enjoy listening to classics and emotional tunes with warm bass, but if you’re craving for heavy doses of bass, there are other Sennheiser headphone models for you.

In terms of midrange frequency, the Sennheiser HD 660 S offers a clear and natural stereo sound quality. The soundstage of the Sennheiser HD 660s is supported by its fully open design. However, if you compare it with other open back headphones, there might be other models who belong to the upper soundstage level. If you are looking for a more intimate soundstage, the Sennheiser HD 660 S offers great amounts of detail and layering with fairly good controlled depth and emotion. Sounds also tend to leak so if you’re one who values privacy, the Sennheiser HD 660 S is not recommended for you.

And that concludes our Sennheiser HD 660 S review. The Sennheiser HD 660 S is a versatile product that works well with mobile devices (Apple, Samsung, Huawei, Oppo, etc.), a perfect choice for individuals who love to listen using mobile phones. We hope that the information we shared can help you in choosing the right product to purchase. For more information about the product, you may also visit the official website of Sennheiser.